How does celery overwinter in winter? These four measures must be seen by vegetable farmers!

Celery is a kind of vegetable that people prefer. Celery can generally produce good yields and can be produced annually. However, if the winter celery is poorly managed or encounters special weather, it is easy to have a large area of ​​dead seedlings, so celery Overwintering management in winter is very important. So how to manage celery in winter?

1. Seedling management

Celery is cold and has strong cold resistance, but the overwintering celery is sown during the high temperature period from August to September, and its seeds will stop sprouting once it exceeds 30 degrees. Provide a suitable environment. First, build a sunshade net on the seedbed to avoid direct sunlight. Before sowing, water the soil to reduce the temperature of the soil and increase the humidity. The soil must be kept loose to prevent the seedlings from suffocating. 4-5 days after planting, a layer of seedlings will grow, but this is actually a weed, which should be pulled out in time to avoid affecting the growth of seedlings. After about 7-10 days, the seedlings break the soil, then water in time to keep the soil moist. After the seedlings are unearthed, you can remove the shading net and keep the temperature at 10-20 degrees, while avoiding strong light. When the seedlings grow 3-4 true leaves, and the seedlings in time, keep the seedlings about 2cm.

2. Colonization management

When the seedlings grow to 5-6 true leaves, they can be planted. Before planting, the site should be fertilized. According to the fertility of the soil, 4000-6000 organic fertilizer and 100-150 compound fertilizer are applied per mu. The tillage and soil are mixed evenly, and they are doing bordering. When planting seedlings, water them thoroughly. When planting seedlings with soil, take care not to damage the root system. Grading transplanting should be reasonably densely planted. The depth of the buried soil during planting is the same as the original depth of the seedlings, exposing the heart leaves of the seedlings. Watering to slow seedlings.

3. Cold protection

Celery should be grown at a temperature of 15-20 degrees Celsius. When the temperature is higher, the method of watering and ventilation should be improved to control the temperature. The maximum temperature should not exceed 22 degrees. When the temperature drops, the cover film should be increased to reduce the ventilation. Ensure the temperature, at this time the temperature should not be lower than 10 degrees. In addition, celery is a low-light plant, the length of light will affect its growth, but the winter light is not easy to control, it is easy to make bolting early, affecting the yield and quality. Generally, it is best to control the light at 6-9 hours a day.

4. Fertilizer and water management

The watering and top dressing of celery is more particular. After planting, it should be done according to the growth of the seedlings. Before the heart leaves grow, the soil must be dry and wet. When the leaves grow, the watering should be controlled to promote root growth and development.

When the heart leaf has grown upright, this should strengthen the supply of water 3 and keep the soil moist at all times. At this time, nitrogen fertilizer can be applied once again, 12-15 kg per mu, which can be washed by watering to make the fertilizer more easily absorbed. When the heart leaves begin to become hypertrophic, potassium fertilizer should be applied at this time to accelerate the enlargement of the heart leaves and improve the yield and quality.

The above is the overwintering management of celery. Celery is cold-tolerant. In areas where the minimum temperature in winter is above minus 5 degrees Celsius, it can be overwintered without protective measures. In areas where the minimum temperature in winter is around minus 10 degrees, open measures need to be added to overwinter. If the minimum temperature in winter is lower than minus 12 degrees, you cannot overwinter in the open.

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